Bug 1028918 - Re-enable test_MediaSource.html on Android 2.3; no review

testing/mochitest/android23.json

@@ -3,7 +3,6 @@
 "excludetests": {
   "robocop": "TIMED_OUT",
   "content/canvas/test/webgl-conformance": "bug 865443 - separate suite -- mochitest-gl",
-  "content/media/mediasource/test/test_MediaSource.html": "Android 2.3 only; bug 1028918",
   "content/media/test": "Android 2.3 only; bug 981898",
   "content/media/webaudio/test": "Android 2.3 only; bug 981889",
   "dom/media/tests/mochitest":"Android 2.3 only; bug 981881"